What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

Delta is the most popular carrier operating from Louisville Intl to Sydney Kingsford Smith

What airlines fly to Sydney?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Sydney from Louisville according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 4 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of March 2026.

How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$623 Cheap Flights from Louisville to Sydney in 2026

Q: What is the typical price of a round-trip flight between Louisville and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $1,701 to $1,468. The lowest price recently found on this route was $1,330.

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Find the cheapest flights from Louisville to Sydney

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One-way

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Cheap round-trip flights

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8:00 am - 7:00 am

SDF

SYD

33h 00m

3 stops

10:20 am - 8:01 pm

SYD

SDF

23h 41m

2 stops

$1,330United Airlines

mar., jun. 9 - mié., jun. 17

3:41 pm - 7:00 am

SDF

SYD

25h 19m

2 stops

10:20 am - 8:23 pm

SYD

SDF

24h 03m

2 stops

$1,331United Airlines

mar., jun. 9 - mié., jun. 17

4:28 pm - 6:50 am

SDF

SYD

48h 22m

2 stops

9:15 am - 7:11 pm

SYD

SDF

23h 56m

2 stops

$1,348Delta

sáb., may. 16 - mié., jun. 10

4:28 pm - 6:50 am

SDF

SYD

48h 22m

2 stops

9:15 am - 5:19 pm

SYD

SDF

46h 04m

2 stops

$1,365Delta

sáb., may. 16 - dom., jun. 14

9:21 am - 11:50 am

SDF

SYD

36h 29m

2 stops

5:50 pm - 7:26 pm

SYD

SDF

39h 36m

1 stop

$1,369Multiple Airlines

sáb., may. 16 - mar., jun. 9

2:34 pm - 6:50 am

SDF

SYD

26h 16m

2 stops

9:15 am - 9:55 am

SYD

SDF

38h 40m

2 stops

$1,375Delta

dom., may. 10 - vie., jun. 12

9:21 am - 11:50 am

SDF

SYD

36h 29m

2 stops

5:50 pm - 7:26 pm

SYD

SDF

39h 36m

1 stop

$1,380Multiple Airlines

mié., may. 13 - mar., jun. 9

3:36 pm - 6:55 am

SDF

SYD

25h 19m

2 stops

10:20 am - 10:30 pm

SYD

SDF

26h 10m

2 stops

$1,381United Airlines

jue., may. 14 - lun., jun. 15

5:52 pm - 6:50 am

SDF

SYD

46h 58m

2 stops

9:15 am - 9:55 am

SYD

SDF

38h 40m

2 stops

$1,392Delta

sáb., may. 16 - vie., jun. 12

3:29 pm - 6:50 am

SDF

SYD

25h 21m

2 stops

9:15 am - 11:22 pm

SYD

SDF

28h 07m

2 stops

$1,419Delta

jue., may. 14 - jue., jun. 11

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets

Qantas Airways

Aug 26

SDF5:50 pmLouisville Intl

23h 05m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 5

SYD12:00 pmSydney Kingsford Smith

19h 29m

1 stop

SDF5:29 pmLouisville Intl

$1,913

Qantas Airways

Aug 26

SDF5:50 pmLouisville Intl

23h 05m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 5

SYD12:00 pmSydney Kingsford Smith

25h 06m

1 stop

SDF11:06 pmLouisville Intl

$1,914

Qantas Airways

Aug 26

SDF7:29 pmLouisville Intl

21h 26m

1 stop

SYD6:55 amSydney Kingsford Smith

Sep 5

SYD12:00 pmSydney Kingsford Smith

25h 06m

1 stop

SDF11:06 pmLouisville Intl

$1,944

United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets

United Airlines

Jun 9

SDF8:00 amLouisville Intl

33h 00m

3 stops

SYD7:00 amSydney Kingsford Smith

Jun 17

SYD10:20 amSydney Kingsford Smith

23h 41m

2 stops

SDF8:01 pmLouisville Intl

$1,330

United Airlines

Jun 9

SDF3:41 pmLouisville Intl

25h 19m

2 stops

SYD7:00 amSydney Kingsford Smith

Jun 17

SYD10:20 amSydney Kingsford Smith

24h 03m

2 stops

SDF8:23 pmLouisville Intl

$1,331

United Airlines

May 14

SDF3:36 pmLouisville Intl

25h 19m

2 stops

SYD6:55 amSydney Kingsford Smith

Jun 15

SYD10:20 amSydney Kingsford Smith

26h 10m

2 stops

SDF10:30 pmLouisville Intl

$1,381

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

mar. 6/9

8:00 am-7:00 am

3 stops33h 00m

Sydney Kingsford Smith

mié. 6/17

10:20 am-8:01 pm

2 stops23h 41m

$1,330

Quickest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

mar. 6/9

3:41 pm-7:00 am

2 stops25h 19m

Sydney Kingsford Smith

mié. 6/17

10:20 am-8:23 pm

2 stops24h 03m

$1,331

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 5/16

4:28 pm-6:50 am

2 stops48h 22m

Sydney Kingsford Smith

mié. 6/10

9:15 am-7:11 pm

2 stops23h 56m

$1,348

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 5/16

4:28 pm-6:50 am

2 stops48h 22m

Sydney Kingsford Smith

dom. 6/14

9:15 am-5:19 pm

2 stops46h 04m

$1,365

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 5/16

9:21 am-11:50 am

2 stops36h 29m

Sydney Kingsford Smith

mar. 6/9

5:50 pm-7:26 pm

1 stop39h 36m

$1,369

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

dom. 5/10

2:34 pm-6:50 am

2 stops26h 16m

Sydney Kingsford Smith

vie. 6/12

9:15 am-9:55 am

2 stops38h 40m

$1,375

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

mié. 5/13

9:21 am-11:50 am

2 stops36h 29m

Sydney Kingsford Smith

mar. 6/9

5:50 pm-7:26 pm

1 stop39h 36m

$1,380

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

jue. 5/14

3:36 pm-6:55 am

2 stops25h 19m

Sydney Kingsford Smith

lun. 6/15

10:20 am-10:30 pm

2 stops26h 10m

$1,381

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

sáb. 5/16

5:52 pm-6:50 am

2 stops46h 58m

Sydney Kingsford Smith

vie. 6/12

9:15 am-9:55 am

2 stops38h 40m

$1,392

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

jue. 5/14

3:29 pm-6:50 am

2 stops25h 21m

Sydney Kingsford Smith

jue. 6/11

9:15 am-11:22 pm

2 stops28h 07m

$1,419

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,228. If you are unable to visit Sydney during the month of November, then departing from Louisville during the month August is also very affordable. Most momondo users find prices during this month for around $1,232.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time	25h 14m
Direct flights	None

The fastest flight from Louisville to Sydney takes 25h 14m

There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.

Search flight deals

How far is Louisville Intl to Sydney Kingsford Smith by plane?
A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 25h 14m.
When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?
There are 2 operators available for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport as of March 2026.
How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Louisville to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Louisville to Sydney is United Airlines (74% of total bookings). The next most popular airline is Delta (26%).

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $973	Free Cancellation	Rating 7.4 9,525 reviews		Search United Airlines flights
Delta	PriceFrom $985	Free Cancellation	Rating 7.9 8,364 reviews		Search Delta flights

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Katoomba

Wollongong

Penrith

Manly

Randwick

Coogee

Leura

Lithgow

Cronulla

Charlestown

Terrigal

Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

An easier way to manage your Sydney trip

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Cheap flights from Louisville to Sydney from $623

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 5/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Louisville to Sydney

What is the typical price of a round-trip flight between Louisville and Sydney?

What is the cheapest month to fly to Sydney?

What is the cheapest airline that flies from Louisville Intl to Sydney Kingsford Smith?

What airlines fly to Sydney?

When to book flights from Louisville to Sydney

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

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Why use momondo?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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